/* === Variables === */
:root {
    --primary: #006608;
    --secondary: #32D011;
    --bg-dark: #0a0a0a;
    --bg-card: #141414;
    --bg-elevated: #1a1a1a;
    --bg-input: #1e1e1e;
    --border: #2a2a2a;
    --border-light: #333;
    --text-primary: #f0f0f0;
    --text-secondary: #a0a0a0;
    --text-muted: #666;
    --radius: 8px;
    --radius-lg: 12px;
    --shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
}

/* === Reset & Base === */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Space Grotesk', -apple-system, BlinkMacSystemFont, sans-serif;
    background: var(--bg-dark);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
    overflow-x: hidden;
}

a {
    color: var(--secondary);
    text-decoration: none;
    transition: color 0.2s;
}

a:hover {
    color: #4ae025;
}

/* === Header === */
.header {
    display: flex;
    align-items: center;
    justify-content: flex-start;
    gap: 2rem;
    padding: 1rem 2rem;
    background: rgba(20, 20, 20, 0.75) !important;
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border);
    position: sticky;
    z-index: 100;
    top: 0;
    z-index: 100;
}

.nav-menu {
    margin-left: auto;
}

.logo {
    display: flex;
    align-items: center;
}

.logo img {
    height: 50px;
    width: 50px;
    border-radius: 50%;
    object-fit: cover;
}

.logo img.logo-wide {
    width: auto;
    height: 45px;
    border-radius: 0;
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: 2rem;
}

.nav-link {
    color: var(--text-secondary);
    font-weight: 500;
    padding: 0.5rem 0;
    position: relative;
}

.nav-link:hover,
.nav-link.active {
    color: var(--text-primary);
}

.nav-btn {
    background: var(--secondary);
    color: var(--bg-dark);
    padding: 0.6rem 1.5rem;
    border-radius: var(--radius);
    font-weight: 600;
    border: none;
    cursor: pointer;
    transition: all 0.2s ease;
    transform: translateY(0);
}

.nav-btn:hover {
    background: #4ae025;
    color: var(--bg-dark);
    transform: translateY(-2px);
}

.nav-btn-outline {
    background: transparent;
    color: var(--secondary);
    border: 1px solid var(--secondary);
}

.nav-btn-outline:hover {
    background: var(--secondary);
    color: var(--bg-dark);
}

.auth-section {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.user-badge {
    background: var(--primary);
    color: var(--text-primary);
    padding: 0.3rem 0.8rem;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 500;
}

/* === Page Hero Banner === */
.page-hero {
    background: linear-gradient(180deg, #0d1117 0%, #080b0f 100%);
    padding: 4rem 2rem;
    text-align: center;
    border-bottom: 1px solid var(--border);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    min-height: 200px;
}

.page-hero h1 {
    font-family: 'Press Start 2P', monospace;
    font-size: 2.16rem;
    font-weight: 400;
    color: var(--text-primary);
    margin: 0;
    line-height: 1.6;
}

.page-hero p {
    font-size: 1.1rem;
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto;
}

.coming-soon {
    color: #32D011;
    font-size: 0.85em;
    font-family: 'Space Grotesk', sans-serif;
    font-weight: 600;
    vertical-align: middle;
    margin-left: 0.5rem;
}

/* === Page Title (Legacy) === */
.page-title {
    text-align: center;
    padding: 2rem;
    border-bottom: 1px solid var(--border);
}

.page-title h1 {
    font-size: 2.5rem;
    font-weight: 600;
    color: var(--text-primary);
}

/* === Main Layout === */
.main-layout {
    display: grid;
    grid-template-columns: 200px 1fr 220px;
    gap: 0;
    min-height: calc(100vh - 150px);
}

/* === Left Sidebar === */
.sidebar-left {
    padding: 2rem 1.5rem;
    border-right: 1px solid var(--border);
}

.section-nav {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.section-link {
    color: var(--text-secondary);
    padding: 0.75rem 1rem;
    border-radius: var(--radius);
    font-weight: 500;
    transition: all 0.2s;
}

.section-link:hover {
    background: var(--bg-elevated);
    color: var(--text-primary);
}

.section-link.active {
    background: rgba(50, 208, 17, 0.15);
    color: #32D011;
    border: 1px solid #32D011;
}

/* === Main Content === */
.content {
    padding: 2rem;
}

.content-box {
    background: transparent;
    border: none;
    border-radius: 0;
    padding: 0;
    min-height: auto;
}

.content-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 2rem;
}

.content-header h2 {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
}

.content-header p {
    color: var(--text-muted);
    font-size: 0.9rem;
    max-width: 500px;
    margin-top: 0.25rem;
}

.add-btn {
    background: var(--secondary);
    color: var(--bg-dark);
    padding: 0.6rem 1.2rem;
    border-radius: var(--radius);
    font-weight: 600;
    border: none;
    cursor: pointer;
    transition: all 0.2s;
    white-space: nowrap;
}

.add-btn:hover {
    background: #4ae025;
}

/* === Materials Grid === */
.materials-grid {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

/* === Terminal Style Material Cards === */
.material-card {
    background: #0d1117;
    border: 1px solid #30363d;
    border-radius: 8px;
    overflow: hidden;
    font-family: 'JetBrains Mono', 'Consolas', monospace;
    transition: all 0.2s;
}

.material-card:hover {
    border-color: #32D011;
    box-shadow: 0 4px 20px rgba(50, 208, 17, 0.1);
}

.material-card-header {
    background: #161b22;
    padding: 0.5rem 1rem;
    display: flex;
    align-items: center;
    border-bottom: 1px solid #30363d;
}

.window-controls {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    margin-right: 0.75rem;
}

.window-btn {
    color: #484f58;
    font-size: 0.7rem;
    font-weight: 300;
    line-height: 1;
}

.window-btn-minimize {
    font-size: 0.9rem;
    margin-top: -2px;
}

.window-btn-maximize {
    font-size: 0.6rem;
}

.window-btn-close {
    font-size: 0.75rem;
}

/* Original macOS terminal dots (for reference) */
.terminal-dots {
    display: flex;
    gap: 0.4rem;
    margin-right: 0.75rem;
}

.terminal-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
}
.terminal-dot.red { background: #ff5f56; }
.terminal-dot.yellow { background: #ffbd2e; }
.terminal-dot.green { background: #27ca40; }

.material-card-category {
    color: #8b949e;
    font-size: 0.75rem;
    margin-left: 0.5rem;
}

.material-card-body {
    padding: 1.25rem;
    display: flex;
    gap: 1.5rem;
}

.material-info {
    flex: 1;
}

.material-info h3 {
    color: #32D011;
    font-size: 1rem;
    margin-bottom: 0.75rem;
    font-weight: 500;
}

.material-info h3::before {
    content: '> ';
    color: #32D011;
    opacity: 0.6;
}

.material-info p {
    color: #8b949e;
    font-size: 0.85rem;
    line-height: 1.6;
    margin-bottom: 1rem;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.material-actions {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-top: auto;
}

.read-more {
    color: #32D011;
    font-size: 0.85rem;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    transition: all 0.2s;
}

.read-more .arrow {
    transition: transform 0.2s;
}

.read-more:hover {
    color: #4ae025;
}

.read-more:hover .arrow {
    transform: translateX(3px);
}

.edit-btn,
.delete-btn {
    background: transparent;
    border: 1px solid #30363d;
    color: #8b949e;
    padding: 0.4rem 0.8rem;
    border-radius: 4px;
    font-size: 0.75rem;
    font-family: 'JetBrains Mono', monospace;
    cursor: pointer;
    transition: all 0.2s;
}

.edit-btn:hover {
    border-color: #32D011;
    color: #32D011;
}

.delete-btn:hover {
    border-color: #ff5f56;
    color: #ff5f56;
}

.material-image {
    width: 120px;
    height: 90px;
    background: #21262d;
    border: 1px dashed #30363d;
    border-radius: 4px;
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
}

.material-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.material-image-placeholder {
    color: #484f58;
    font-size: 0.7rem;
}

/* === Right Sidebar === */
.sidebar-right {
    padding: 2rem 1.5rem;
    border-left: 1px solid var(--border);
}

.filter-group {
    margin-bottom: 2rem;
}

.filter-title {
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 1rem;
}

/* Search */
.search-box {
    position: relative;
}

.search-box input {
    width: 100%;
    padding: 0.7rem 1rem;
    padding-right: 2.5rem;
    background: var(--bg-input);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    color: var(--text-primary);
    font-size: 0.9rem;
}

.search-box input:focus {
    outline: none;
    border-color: var(--secondary);
}

.search-icon {
    position: absolute;
    right: 0.75rem;
    top: 50%;
    transform: translateY(-50%);
    width: 18px;
    height: 18px;
    color: #32D011;
}

/* Dropdown */
.dropdown {
    position: relative;
}

.dropdown-btn {
    width: 100%;
    display: flex;
    justify-content: flex-start;
    align-items: center;
    gap: 0.5rem;
    padding: 0;
    background: transparent;
    border: none;
    color: var(--text-primary);
    font-size: 0.9rem;
    font-style: normal;
    cursor: pointer;
    transition: all 0.2s;
}

.dropdown-btn:hover {
    opacity: 0.8;
}

.dropdown-arrow {
    width: 12px;
    height: 12px;
    transition: transform 0.2s;
    opacity: 0.7;
}

.dropdown.open .dropdown-arrow {
    transform: rotate(180deg);
}

.dropdown-triangle {
    font-size: 0.6rem;
    color: #32D011;
    transition: transform 0.2s;
}

.dropdown.open .dropdown-triangle {
    transform: rotate(180deg);
}

.dropdown-menu {
    position: relative;
    background: transparent;
    border: none;
    margin-top: 0.5rem;
    display: none;
    z-index: 10;
    padding-left: 0.5rem;
}

.dropdown.open .dropdown-menu {
    display: block;
}

.dropdown-item {
    display: block;
    padding: 0.3rem 0;
    color: var(--text-muted);
    transition: all 0.2s;
    font-size: 0.85rem;
}

.dropdown-item:hover {
    color: #32D011;
}

.dropdown-item.active {
    color: #32D011;
    font-weight: 500;
}

/* Category Pills */
.category-list {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    align-items: flex-start;
}

.category-pill {
    display: inline-block;
    padding: 0.4rem 0.75rem;
    background: transparent;
    border: 1px solid var(--border);
    border-radius: 6px;
    color: var(--text-secondary);
    font-size: 0.85rem;
    cursor: pointer;
    transition: all 0.2s;
    text-align: left;
}

.category-pill:hover {
    border-color: #32D011;
    color: #32D011;
}

.category-pill.active {
    background: #32D011;
    border-color: #32D011;
    color: var(--bg-dark);
    font-weight: 500;
}

.manage-btn {
    margin-top: 1rem;
    width: 100%;
    padding: 0.5rem;
    background: transparent;
    border: 1px dashed var(--border);
    border-radius: var(--radius);
    color: var(--text-muted);
    font-size: 0.85rem;
    cursor: pointer;
    transition: all 0.2s;
}

.manage-btn:hover {
    border-color: var(--secondary);
    color: var(--secondary);
}

/* === Modals === */
.modal {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.8);
    display: none;
    align-items: center;
    justify-content: center;
    z-index: 1000;
}

.modal.open {
    display: flex;
}

.modal-content {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 2rem;
    width: 100%;
    max-width: 400px;
    position: relative;
    max-height: 90vh;
    overflow-y: auto;
}

.modal-large {
    max-width: 600px;
}

.modal-close {
    position: absolute;
    top: 1rem;
    right: 1rem;
    background: none;
    border: none;
    color: var(--text-muted);
    font-size: 1.5rem;
    cursor: pointer;
    line-height: 1;
}

.modal-close:hover {
    color: var(--text-primary);
}

.modal-content h3 {
    font-size: 1.25rem;
    margin-bottom: 1.5rem;
}

/* Forms */
.form-group {
    margin-bottom: 1.25rem;
}

.form-group label {
    display: block;
    font-size: 0.9rem;
    font-weight: 500;
    margin-bottom: 0.5rem;
    color: var(--text-secondary);
}

.form-group input,
.form-group select {
    width: 100%;
    padding: 0.75rem 1rem;
    background: var(--bg-input);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    color: var(--text-primary);
    font-size: 0.95rem;
}

.form-group input:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--secondary);
}

.form-group select {
    cursor: pointer;
}

.login-hint {
    font-size: 0.8rem;
    color: var(--text-muted);
    margin-bottom: 1rem;
    padding: 0.75rem;
    background: var(--bg-elevated);
    border-radius: var(--radius);
}

.submit-btn {
    width: 100%;
    padding: 0.75rem;
    background: var(--secondary);
    color: var(--bg-dark);
    border: none;
    border-radius: var(--radius);
    font-weight: 600;
    font-size: 1rem;
    cursor: pointer;
    transition: all 0.2s;
}

.submit-btn:hover {
    background: #4ae025;
}

.form-actions {
    display: flex;
    gap: 1rem;
    margin-top: 1.5rem;
}

.form-actions .cancel-btn,
.form-actions .submit-btn {
    flex: 1;
}

.cancel-btn {
    padding: 0.75rem;
    background: transparent;
    color: var(--text-secondary);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s;
}

.cancel-btn:hover {
    border-color: var(--text-secondary);
    color: var(--text-primary);
}

.input-with-btn {
    display: flex;
    gap: 0.5rem;
}

.input-with-btn input {
    flex: 1;
}

.input-with-btn .submit-btn {
    width: auto;
    padding: 0.75rem 1.25rem;
}

/* Editor */
.editor-toolbar {
    display: flex;
    gap: 0.25rem;
    padding: 0.5rem;
    background: var(--bg-elevated);
    border: 1px solid var(--border);
    border-bottom: none;
    border-radius: var(--radius) var(--radius) 0 0;
}

.editor-toolbar button {
    padding: 0.4rem 0.6rem;
    background: var(--bg-input);
    border: 1px solid var(--border);
    border-radius: 4px;
    color: var(--text-secondary);
    cursor: pointer;
    transition: all 0.2s;
}

.editor-toolbar button:hover {
    background: var(--primary);
    color: var(--text-primary);
}

.editor {
    min-height: 150px;
    padding: 1rem;
    background: var(--bg-input);
    border: 1px solid var(--border);
    border-radius: 0 0 var(--radius) var(--radius);
    color: var(--text-primary);
    font-size: 0.95rem;
    line-height: 1.6;
}

.editor:focus {
    outline: none;
    border-color: var(--secondary);
}

/* Category Management */
.category-manage-list {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    margin-top: 1rem;
}

.category-manage-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.75rem 1rem;
    background: var(--bg-elevated);
    border-radius: var(--radius);
}

.category-manage-item span {
    color: var(--text-primary);
}

.category-manage-item button {
    background: transparent;
    border: none;
    color: #e53935;
    cursor: pointer;
    padding: 0.25rem;
    font-size: 0.9rem;
}

.category-manage-item button:hover {
    color: #ff5252;
}

/* Empty State */
.empty-state {
    text-align: center;
    padding: 3rem;
    color: var(--text-muted);
}

.empty-state p {
    margin-bottom: 1rem;
}

/* === Hamburger Menu === */
.hamburger {
    display: none;
    flex-direction: column;
    justify-content: space-between;
    width: 28px;
    height: 20px;
    cursor: pointer;
    z-index: 1001;
}

.hamburger span {
    display: block;
    width: 100%;
    height: 2px;
    background: var(--text-primary);
    border-radius: 2px;
    transition: all 0.3s ease;
}

.hamburger.active span:nth-child(1) {
    transform: rotate(45deg) translate(6px, 6px);
}

.hamburger.active span:nth-child(2) {
    opacity: 0;
}

.hamburger.active span:nth-child(3) {
    transform: rotate(-45deg) translate(6px, -6px);
}

/* === Mobile Overlay === */
.mobile-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.8);
    z-index: 99;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.mobile-overlay.active {
    opacity: 1;
}

/* === Responsive === */
@media (max-width: 1024px) {
    .main-layout {
        grid-template-columns: 180px 1fr 200px;
    }
    
    .page-hero {
        padding: 3rem 1.5rem;
    }
    
    .page-hero h1 {
        font-size: 2.52rem;
    }
}

@media (max-width: 768px) {
    /* Hamburger visible on mobile */
    .hamburger {
        display: flex;
        margin-left: auto;
    }
    
    .mobile-overlay {
        display: block;
        pointer-events: none;
    }
    
    .mobile-overlay.active {
        pointer-events: auto;
    }
    
    /* Mobile Nav Menu */
    .nav-menu {
        position: fixed;
        top: 0;
        right: -280px;
        width: 280px;
        height: 100vh;
        background: linear-gradient(180deg, #0d1117 0%, #080b0f 100%);
        flex-direction: column;
        align-items: flex-start;
        justify-content: flex-start;
        padding: 5rem 2rem 2rem;
        gap: 0;
        z-index: 100;
        transition: right 0.3s ease;
        border-left: 1px solid var(--border);
    }
    
    .nav-menu.active {
        right: 0;
    }
    
    .nav-menu .nav-link,
    .nav-menu .nav-btn {
        width: 100%;
        padding: 1rem 0;
        min-height: 48px;
        display: flex;
        align-items: center;
        font-size: 1.1rem;
        border-bottom: 1px solid var(--border);
    }
    
    .nav-menu .nav-btn {
        margin-top: 1rem;
        justify-content: center;
        border-bottom: none;
    }
    
    /* Header adjustments */
    .header {
        padding: 1rem 1.5rem;
    }
    
    .logo img.logo-wide {
        height: 35px;
    }
    
    /* Page Hero mobile */
    .page-hero {
        padding: 2.5rem 1.5rem;
    }
    
    .page-hero h1 {
        font-size: 1.8rem;
        line-height: 1.4;
    }
    
    .coming-soon {
        display: block;
        margin-left: 0;
        margin-top: 0.5rem;
    }
    
    /* Main layout */
    .main-layout {
        grid-template-columns: 1fr;
    }
    
    .sidebar-left,
    .sidebar-right {
        border: none;
        border-bottom: 1px solid var(--border);
        padding: 1rem 1.5rem;
    }
    
    .section-nav {
        flex-direction: row;
        flex-wrap: wrap;
        gap: 0.5rem;
    }
    
    .section-link {
        min-height: 44px;
        padding: 0.75rem 1rem;
    }
    
    /* Touch-friendly tap targets */
    .nav-link,
    .nav-btn,
    .section-link,
    .category-pill,
    button,
    .btn,
    a.btn,
    .material-card,
    .read-more {
        min-height: 44px;
    }
    
    /* Material cards */
    .material-card {
        grid-template-columns: 1fr;
    }
    
    .material-image {
        width: 100%;
        height: 150px;
    }
    
    /* Content area */
    .content {
        padding: 1rem 1.5rem;
    }
    
    /* Footer mobile */
    .site-footer {
        padding: 1.5rem;
    }
    
    .footer-social {
        gap: 1.5rem;
    }
    
    .footer-social-link {
        width: 48px;
        height: 48px;
    }
}

/* === Site Footer === */
.site-footer {
    padding: 2rem;
    margin-top: 2rem;
    border-top: 1px solid var(--border);
}

.footer-social {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 2rem;
}

.footer-social-link {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    color: var(--text-muted);
    transition: all 0.3s ease;
}

.footer-social-link:hover {
    color: #32D011;
}

.footer-social-svg {
    width: 24px;
    height: 24px;
}

.footer-social-icon {
    width: 24px;
    height: 24px;
    object-fit: contain;
    filter: brightness(0) invert(0.5);
    transition: all 0.3s ease;
}

.footer-social-link:hover .footer-social-icon {
    filter: brightness(0) saturate(100%) invert(52%) sepia(95%) saturate(1000%) hue-rotate(85deg) brightness(95%) contrast(95%);
}